HTP® Independence 251 Single Voltage AC/DC Water-Cooled:
Power Forged in Independence.
From the sparks of revolution to the spirit of American craftsmanship, HTP America brings you the Independence 251 AC/DC — a TIG machine that delivers unmatched performance with the grit and reliability American welders demand.
If the INDEPENDENCE 210 AC/DC was the declaration, then the INDEPENDENCE 251 AC/DC is the Constitution — the solid foundation of TIG power, control, and versatility that lets you weld without limits.
Built on the legacy of the Invertig 251 AC/DC, the Independence 251 AC/DC keeps everything you loved — and flies it under a new banner. Designed for those who take pride in their work and stand tall behind every weld they make.
This machine is your TIG torch of liberty.
This is not just another TIG welder — it’s a symbol of what happens when rules are broken and welders not “bean counters” build elite welding machines.
🔥 FEATURES OF THE INDEPENDENCE 251 Single Voltage (220) AC/DC
⚡ 250 Amps of TIG Power – AC & DC Modes
Confidently weld everything from aluminum to stainless, mild steel, titanium, and more — with smooth, stable arc control throughout the full range.
🔄 AC/DC Mix TIG Mode
Combine the cleaning power of AC with the deep penetration of DC in a single arc. Perfect for heavy aluminum and high-speed productivity — ideal for structural, motorsports, and marine applications. 3 AC wave forms to choose from and mix wave shapes.
🔁 Double Pulse TIG
Add rhythm and control to your welds. Reduce heat input, minimize warping, and create that signature “stacked dime” appearance with ease — even on tricky metals and thin gauge material. The perfect tool for titanium.
⚙️ Fast Tack Function
High-frequency, low-distortion arc starts for quick tacking without filler — ideal for precise fixturing and fit-up work where every second counts.
🎯 Full AC Frequency & Balance Control
Dial in the exact arc shape, focus, and cleaning action for your job. Whether you’re welding cast, extruded, or mirror-finish aluminum — you’re in control.
⏱️ Start & End Amps with Adjustable Slopes
Soft starts and smooth finishes — set your arc exactly how you want it to begin and end, from razor-thin sheet to thick section fabrication.
🧠 Memory Function & Preset Jobs
Save and recall your favorite settings in seconds — fast setup for repeatable jobs in the shop or field.
🔥 Carbon air arc gouging
Easily remove old welds, cut castings, remove stainless and leave a surface ready to just touch up with a grinder or in most cases to weld to right away.
🖥️ Large Color Display & Intuitive Controls
Big, bright interface with simplified menus. Quickly adjust key parameters without digging through layers of complexity.
🌀 Fan-On-Demand Cooling
Runs quiet when idle. Powers up when things get hot — keeps your machine clean and efficient.
🧰 AC and DC Stick Welding Mode with Pulse
Versatile enough for maintenance and structural welding with stick. Quick polarity changeover and smooth arc response.
🪶 Portable Powerhouse – Under 60 lbs
Easily moves between shop bays, race trailers, or job sites. Heavy-duty handle and compact form make it truly portable.
Built by HTP America
Supported, serviced, and shipped from the U.S.A. Engineered for welders who believe in freedom, strength, and reliability.
🦅 WHY CHOOSE THE INDEPENDENCE 251 AC/DC?
Because you don’t just weld — you build!
Because you don’t just weld aluminum — you sculpt it.
Because every arc you strike is a signature of your skill, your craft, and your independence.
🔧 Ideal For:
• High-end aluminum fabrication
• Aerospace and motorsports welding
• Stainless piping and sanitary tubing
• Custom vehicles, chassis, and tanks
• Welding on-site or in-shop with dual voltage flexibility
More Power. More Control. All American.
Available now at www.usaweld.com
Owner’s Manual
Firmware Download
Warning: Welding and cutting equipment, accessories, and fumes can expose you to chemicals, including Chromium (Hexavalent Compounds), Lead, and Nickel, which are known to the State of California to cause cancer and/or birth defects or other reproductive harm.
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